Internal Medicine, Gastroenterology in ANN ARBOR, MI
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John Irvin Allen is a physician in Ann Arbor, Michigan, specializing in Internal Medicine and Gastroenterology.
Generated from public NPI Registry data only. Not independently verified — confirm credentials directly with the practice.
JOHN IRVIN ALLEN specializes in Internal Medicine, Gastroenterology.
JOHN IRVIN ALLEN practices in ANN ARBOR, MI.
JOHN IRVIN ALLEN's NPI number is 1154393502.